$ openapi-generator-cli generate \
    -g kotlin-spring \
    -i docs/spec/CodeCharacter-API.yml \
    -c docs/spec/generator-config.yml \
    --model-name-suffix=Dto \
    --import-mappings=DateTime=java.time.Instant \
    --type-mappings=DateTime=java.time.Instant \
    -o library \
    --enable-post-process-file